Buffalo-technology PC-P1LAN Manual do Utilizador descarregar pdf (Página 21)

21Mini LinkTheater User’s Manual

Using LinkTheater

Detailed Conguration

Appendix

Glossary

• AVI

Digital le format developed for Windows

by Microsoft. If a video is recorded in AVI

format (without using codec), the recorded

le size becomes larger because video

compression is not used (if recorded at

320 x 240 resolution, 30 minutes of video

requires about 5GB of space). Advantages

are that les can be processed simply using

editing software, but video and audio timing

may become out of sync if recorded for a

long period of time.

• CBR: Constant Bit Rate (Constant

bitrate)

Videos are usualy recorded at the same

bitrate (amount of data). For this reason,

there may be reduced image quality if

you compare scenes that have a lot of

movement with those that have little

movement. Furthermore, block noise may

also occur in scenes that contain intense

movement because of the lack of bitrate.

• CQ: Constant Quality (Constant quality)

The bitrate is changed automatically to

keep image quality constant. As the bitrate

changes according to the video, the size

of the recorded les will differ greatly

depending on the video being recorded

(videos with lots of movement are larger).

• CVBR: Constrain Variable Bit Rate

(Variable bitrate)

This mode records within a bitrate range

(data size) set prior to recording. Recording

is performed with a higher bitrate when there

is a lot of movement, and a lower bitrate

when there is only a little movement. On

LinkTheater, you can specify the (average)

bitrate and maximum bitrate, and record

using the (average) bitrate value as the

average value.

• MPEG

International standard of animation

compression dened by the Moving Picture

Expert Group (commonly known as MPEG

format forum). MPEG format adopts a

method that compresses the video and

audio data separately, and is the format

used on DVD-Video and Video-CD. There

are a number of formats within MPEG

format, such as [MPEG-1] or [MPEG-2].

• MPEG-2

Like MPEG-1, but much better. This is the

format used for DVD-Video.

• WMV

WMV is Microsoft's Windows Media Video

format.

• Codec

Codec is the collective name for coding

and decoding. A codec is a program that

compresses/decompresses video and audio,

and is required for playing/saving video on a

computer. There are many types of codecs,

and different codecs are required for different

video les. If there are no codecs that suit a

particular le on the computer, the video may

not be displayed, or the audio may not be

outputted.

• Bitrate

Rate of data ow for a video le. Higher

bitrates give better quality video, but increase

network trafc and le size.

1 2 ... 16 17 18 19 20 21 22 23

Comentários a estes Manuais

Sem comentários